Ancient Viruses Altered Human Brains

giulioprisco writes: A new study from Lund University in Sweden (abstract) indicates inherited viruses that are millions of years old play an important role in building up the complex networks that characterize the human brain. The Lund study shows that retroviruses seem to play a central role in the basic functions of the brain — over the course of evolution, the viruses took an increasingly firm hold on the steering wheel in our cellular machinery. In particular, the retroviruses seem to play an important role in the regulation of which genes are to be expressed, and when.”